15680557772 has 12 divisors (see below), whose sum is σ = 29935610376. Its totient is φ = 7127526240.

The previous prime is 15680557759. The next prime is 15680557811. The reversal of 15680557772 is 27775508651.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178188113 + ... + 178188200.

It is an arithmetic number, because the mean of its divisors is an integer number (2494634198).

Almost surely, 2^15680557772 is an apocalyptic number.

It is an amenable number.

15680557772 is a deficient number, since it is larger than the sum of its proper divisors (14255052604).

15680557772 is a wasteful number, since it uses less digits than its factorization.

15680557772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356376328 (or 356376326 counting only the distinct ones).

The product of its (nonzero) digits is 4116000, while the sum is 53.

The spelling of 15680557772 in words is "fifteen billion, six hundred eighty million, five hundred fifty-seven thousand, seven hundred seventy-two".